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Revolutions per minute
Related publications (35)
Near-Zero Parasitic Shift Flexure Pivots Based on Coupled n-RRR Planar Parallel Mechanisms
Simon Nessim Henein, Florent Cosandier, Loïc Benoît Tissot-Daguette, Etienne Frédéric Gabriel Thalmann
Flexure pivots, which are widely used for precision mechanisms, generally have the drawback of presenting parasitic shifts accompanying their rotation. The known solutions for canceling these undesirable parasitic translations usually induce a loss in radi ...
2024Improvements in Resolution of 1H NMR of Solids
David Lyndon Emsley, Bruno Simões de Almeida
Magic angle spinning (MAS) in 1H NMR has allowed progress from featureless spectra in static samples to linewidths of a few hundreds of Hertz for powdered solids at the fastest spinning rates available today (100-150 kHz). While this is a remarkable improv ...
SWISS CHEMICAL SOC2023Triple Crossed Flexure Pivot Based on a Zero Parasitic Center Shift Kinematic Design
Simon Nessim Henein, Etienne Frédéric Gabriel Thalmann
Thanks to their absence of play, absence of contact friction and possible monolithic fabrication, flexure pivots offer advantages over traditional bearings in small-scale, high accuracy applications and environments where lubrication and wear debris are pr ...
2022Modelling and Sensors for Magnetically-Levitated Disc Drives
Juan Patricio Tomás Peralta Fierro
The development of new industrial applications has diverted the focus of research towards compacter and faster rotatory drives. These requirements push the classical ball-bearings of electric motors to the limits in terms of operational lifetime and fricti ...
EPFL2022Experimental Investigation of Enhanced Grooves for Herringbone Grooved Journal Bearings
Jürg Alexander Schiffmann, Patrick Hubert Wagner, Philipp Kaspar Bättig
This paper presents the results of a theoretical and experimental investigation of the potential of enhanced groove geometries to increase the bearing clearance of a Herringbone Grooved Journal Bearing (HGJB) supported rotor. The theoretical study investig ...
2022One-minute average cruise track and ship velocity of the Antarctic Circumnavigation Expedition (ACE) undertaken during the austral summer of 2016/2017.
Julia Schmale, Jenny Thomas, Sebastian Johannes Heinz-Josef Landwehr
Dataset abstract The ship's cruise track, velocity, course over ground and heading at one-minute resolution for all five legs of the Antarctic Circumnavigation Expedition (ACE) are derived from a combination of: - the latitude/longitud ...
2020Blue-shift ultrasensitivity using rhombus-shaped plasmonic crystal on Si3N4 membrane
Bahareh Ghadiani, Dordaneh Etezadi, Yasaman Jahani, Ershad Mohammadi, Foziyeh Sohrabi, Mahdi Tamizifar
Harnessing ultrasensitivity from optical structures to detect tiny changes in the targeted samples is the main goal of scientists in the field of sensor design. In this study, an uncommon rhombus-shape plasmonic structure is proposed for providing blue-shi ...
OPTICAL SOC AMER2020Mechanical Model for Drift-Induced Punching of Slab-Column Connections without Transverse Reinforcement
Aurelio Muttoni, Katrin Beyer, Ioannis Sokratis Drakatos
A mechanical model is presented for predicting the momentrotation relationship of interior slab-column connections without transverse reinforcement when subjected to seismically induced drifts. The model accounts explicitly for the three load-transfer acti ...
2018Spatially Sampled Pressure Profile Measurements in Externally Pressurized Gas Journal Bearings
Jürg Alexander Schiffmann, Eliott Philippe Guenat, Karim Magdi Zakaria Abdelrahman Shalash
Externally pressurized gas journal bearings (EPGJB) are widely adopted to support high speed rotors. This paper presents novel experimental benchmark test data which enables EPGJB model validation. Axial and circumferential pressure profile measurements ar ...
2018Motion-based nearest vector metric for reference frame selection in the perception of motion
Michael Herzog, Aaron Michael Clarke
We investigated how the visual system selects a reference frame for the perception of motion. Two concentric arcs underwent circular motion around the center of the display, where observers fixated. The outer (target) arc's angular velocity profile was mod ...
Association for Research in Vision and Ophthalmology (ARVO)2016